[automake-commit] branch master updated: configure: better check for the perl patch containing whitespace.

[Karl Berry]

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karl pushed a commit to branch master
in repository automake.

View the commit online:
https://git.savannah.gnu.org/gitweb/?p=automake.git;a=commitdiff;h=f2b1058326803a72497f73ae8c39b7883b32f857

The following commit(s) were added to refs/heads/master by this push:
     new f2b105832 configure: better check for the perl patch containing 
whitespace.
f2b105832 is described below

commit f2b1058326803a72497f73ae8c39b7883b32f857
Author: Karl Berry <karl@freefriends.org>
AuthorDate: Sat Dec 2 14:53:12 2023 -0800

    configure: better check for the perl patch containing whitespace.
    
    More for https://bugs.gnu.org/62896.
    
    * configure.ac: quote "$PERL" and check directly with grep.
---
 configure.ac | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/configure.ac b/configure.ac
index 23a9f97f5..946fecb67 100644
--- a/configure.ac
+++ b/configure.ac
@@ -70,8 +70,8 @@ AC_PROG_LN_S
 AC_PATH_PROG([PERL], [perl])
 if test -z "$PERL"; then
    AC_MSG_ERROR([perl not found])
-elif test x"`echo $PERL | grep ' '`" != "x"; then
-  AC_MSG_ERROR([The path to your Perl contains spaces.
+elif echo "$PERL" | grep '[    ]' >/dev/null; then
+  AC_MSG_ERROR([The path to your Perl contains spaces or tabs.
 This would cause build failures later or unusable programs.
 Please use a path without spaces and try again.])
 fi